- manage
- mixy-maxy
- microchip
- mostly
- montane
- mango nut
- mangrove
- manhood
- manifesto
- manifold
- manikin
- manila
- manipulative
- manly
- mannerly
- mannish
- manoeuvre
- mocking
- mocking bird
- marasmus senilis
- modelling
- marginalise
- mariners compass
- mark something up
- markandeya
- marked
- marksman, markswoman
- marksmanship
- marplot
- marriage certificate
- married
- martial
- martyrdom
- masochistic
- mason
- molecular biology
- massage
- master class
- master degree
- molest
- masturbation
- meaning
- match fixing
- molluscum contagiosum
- matching
- matchless
- moment
- mammonish
- maternity leave
- monandry
- matrimony
- mythical stories
- maul
- mawkish
- mayday
- mayor
- maze
- money-making
- meal
- monitor
- measure up to
- mitosis
- monkey with
- measuring ladle
- meaty
- mechanism
- mediator
- monocot
- medicinal root
- medieval
- medievalist
- meditation
- medulla
- meet the trouble halfway
- meet with only limited success
- meeting
- monotheistic
- megalodon
- monotone
- mellifluous
- monotonous
- mips
- mont blanc
- memorably
- memorandum of association
- montage
- menace
- mend
- moobs
- menshevic
- moody
- mental agitation
- moon
- monstrous
- moon-calf
- mercantile
- moonlit
- merchant ship
- merit
- mineralogist